Fiber Optic Splice Protection Sleeves & Heat-Shrink Tubing
The consumables that protect every fusion splice in your network — single-fiber, ribbon, micro and FTTH drop-cable sleeves, splice boxes and mid-wall closure tubing. Factory-direct, custom sizing, bulk pricing.
What Is a Fiber Optic Splice Protection Sleeve?
A fiber optic splice protection sleeve (or fusion splice sleeve) is a heat-shrink tube placed over a fusion splice. It has three parts: a cross-linked polyolefin outer tube that shrinks with heat, a hot-melt EVA inner tube that flows and seals the splice, and a stainless-steel strength member that keeps the bare fiber from bending or breaking.
After heating, it forms a rigid, sealed, transparent protector around the splice point — restoring mechanical strength without affecting optical performance.
Splice Protection & Heat-Shrink Range
Single-Fiber Fusion Splice Sleeve
The workhorse sleeve for single-fiber fusion splices: cross-linked polyolefin outer, hot-melt EVA inner and a stainless-steel strength member.
Micro / Mini Splice Sleeve
Slim sleeve for 0.25–0.4mm bare fiber, couplers, adapters and patch-cord splices where a standard sleeve is too bulky.
Ribbon Fiber Splice Sleeve
Flat single/double-sided sleeve for mass-fusion ribbon splices, with a ceramic or quartz strength member sized to the ribbon.
FTTH Drop-Cable Splice Sleeve
Last-mile sleeve for drop-to-drop and drop-to-pigtail splices. 304 stainless needles, chamfered ends, pre-shrunk tips lock the strength member.
Bare Fiber Protection Tube
PE / EVA / PVC tubing that shields stripped bare fiber and fiber bundles inside trays and closures.
FTTH Splice Box (1-in / 1-out)
Injection-molded PP/nylon box that mechanically protects a finished drop-cable splice — smooth, high-strength, twist-resistant.
Square 2-in/2-out & 3-in/3-out Box
For 2- or 3-core butterfly drop-cable to drop-cable, or drop-cable to pigtail splices at the premises.
Adhesive-Lined Mid-Wall Tube
Dual-layer polyolefin + hot-melt adhesive tube that seals cable entries on dome / cap closures. UV resistant, RoHS.
Fiber / Cable Branch Clip
Die-cast aluminum body with EVA/PA hot-melt insert, used with heat-shrink tube for clean 1-to-2 / 1-to-3 cable branching in closures.
Telecom Cable Heat-Shrink Sleeve
Wraparound reinforced heat-shrink for splicing and jacket repair on PE and metal-sheathed telecom cables — aerial, buried, duct.
Waterproof Self-Fusing Tape
Self-curing waterproofing for base-station joints, coax connectors, grounding and GPS — no heat, no tools, removable for maintenance.
Double-Clip Ceramic Sleeve (IP68)
Twin-ceramic sleeve that splices 3×2mm drop cable to 0.9/2.0/3.0mm pigtails and replaces both the sleeve and the box — fewer parts, IP68.
How to Choose the Right Sleeve — Quick Size Guide
| Application | Sleeve type | Typical length | Strength member |
|---|---|---|---|
| Single-fiber 0.9mm splice | Single-fiber sleeve | 40 / 45 / 60mm | Steel needle 0.8–1.5mm |
| 0.25mm bare fiber, couplers, pigtails | Micro / mini sleeve | 20–40mm | Steel rod |
| Ribbon splice (4–12 fiber) | Ribbon sleeve | 40mm | Ceramic / quartz |
| FTTH drop-cable splice | FTTH drop sleeve | 45 / 50 / 55 / 60mm | Single / double 304 needle |
| Drop cable, waterproof, no box | Double-clip ceramic (IP68) | — | Twin ceramic |
| Dome / cap closure cable entry | Adhesive mid-wall tube | 120–200mm | 3:1, adhesive-lined |
New to splice sleeves, or sourcing in bulk? Our buyer's guide breaks down sleeve sizes, single vs. double needle FTTH sleeves, sleeve-vs-box-vs-ceramic, and the quality checks that separate a good sleeve from a fiber-breaker. Read the Splice Sleeve Buying Guide →
Why Source Splice Protection From AIMIFIBER
🏭 Factory-direct
Sleeves, boxes, mid-wall tube and tape from one supplier — full-pallet pricing, one shipment.
🔩 304 stainless needles
Chamfered, polished ends and pre-shrunk tips lock the strength member — no fiber breakage on the line.
📐 Custom sizing
Non-standard sleeve and tube lengths, diameters and ribbon counts built to your splice tray.
📦 Bundle & consolidate
Add sleeves and boxes to an existing FTTH drop, patch-cord or splitter order and save on freight.
Frequently Asked Questions
What length splice protection sleeve do I need?
Single-needle vs double-needle FTTH sleeve?
Do splice protection sleeves affect optical loss?
Can I get custom sizes or private packaging?
Need a splice protection quote?
Send your splice tray, sizes and volume — we reply within one business day.
